In this chapter, I explore connections between group creativity and product creativity, building on chapter 4’s claim that everyday social encounters involve a kind of creativity. I begin by observing that prod uct creativity involves interaction over time. One creator develops a novel product, and the product is then communicated to other cre ators who work in the same area. The subsequent creations of these other individuals then respond to, and elaborate on, this product; this process results in diachronic interaction, a creative dialogue over time, with the “conversation” mediated by products rather than by spoken language. 1 compare this historical interaction to the more immediate symbolic interaction that occurs during group creativity. Because in teraction among participants is immediate-and in music, simulta neous and in parallel-it is synchronic interaction.